Improvement in ice-machines



D. BOYLE.

Ice-Machine.

N0. 163,144, Patented Mag/11,1875.

Wzmrs 51:5. INVENTUB. fizz/$76M 9mg, 3

THE GRAPHIC 80. PR 0T0 LITH.39 & 41 PARK PLACE,N.Y.

DAVID BOYLE, OF QUINCY, ILLINOIS.

IMPROVEMENT IN ICE-MACHINES.

Specificatitn forming part of Letters Patent No. 363,!44, dated May 11, 1875; application filed April 14, 1875.

To a] l whom it may concern Be it known that I, DAVID BOYLE, of Quincy, Illinois, have invented certain new and useful Improvements in Ice-Machines, of which the following is a specification, reference being had to the accompanying drawings.

The invention relates to an improved ice machine, and consists in the following feature: a hollow compartment wherein is provided an evaporator-coil, so that the uncongealable fluid is acted on by the coil, and the sides of the compartment chilled, forming the ice thereon. The object of the invention is to furnish a convenient device for manufacturing ice.

Figure 1 is a side elevation of a device embodying the elements of the invention, one end of the outer tank and one side of an inner compartment having been removed. Fig. 2 is a detached top view of one of the compartments.

A, in the accompanying drawings, is a freezing-tank, tapering inward on two of'its sides, so that the ice is formed in the tank in wedgeshaped plates, which may easily be withdrawn. B are pipes, through which the chilling or heatabstracting agent is fed, and are connected with an exhaust and compression pump, or other equivalent apparatus, (not shown also, with a distributer, (not shown,) placed in proper relation to the upper pipes B. The pipes B B are the termini of coils D, )laced vertically, one in each of the compartments E, which are severally formed of the plates F of conductin g material, secured in a water-tight manner to the frame H of nonconducting material, properly recessed on its exterior, to permit a circulation of the water, and forming three sides of the compartment, which thus constitutes an evaporator-tank.

At a proper place in the lower part of each compartmentis placed a pipe, h, supplied with a cock, 1', for withdrawing the uncongealable fluid, so that a thawing agent may be introduced into each compartment to thaw the ice off.

The operation is conducted by filling the tank A to about the level of the upper edges of the plates F, filling the compartments E with uncongealahle fluid, then admitting the chilling agent to the coils D,in the usual manner. Careshould be taken that the ice does not form entirely across the water-spaces between the compartments. The usual product is ice free from any bubble or other imperfection. To remove the ice, draw the uncongealable fluid from each of the compartments E by its pipe h and cock 6, and introduce therein a thawingagent. The ice, being formed in wedgeshaped sheets or plates, widest at their upper ends, may easily be removed.

What I claim as my invention, and desire to secure by Letters Patent, is

A hollow compartment composed. of a nonconducting frame connected by freezingplates, and containing an evaporatorcoil, substantially as set forth.

In testimony that I claim the foregoing improvements in ice -machines, as above described, I have hereunto set my hand and seal.

. DAVID BOYLE. in. s.] \Vitnesses Tuos. T. WOODRUFF, O. A. LEwIs. 

